Method of forming a forged fulcrum



L. L. WHITNEY.

METHOD OF FORMING A FORGED FULCRUM.

APPLICATION FILED APR.26, 191a.

1,335,2 1 3. Patented Mar. 30, 1920.

2 SHEETS SHEET I.

L. L. WHITNEY.

METHOD OF FORMING A FORGED FULCRUM.

APPLICATION FILED APR.26.1918.

1 ,335,2 1 3 Patented Mar. 30, 1920.

2 SHEETS-SHEET 2.

1 '1 v m I, J6]? J5 12M 7 I I lore/0i MM @www UNITED STATES PZIENTOFFICE.

LOREN I.. WHITNEY, or HAMMOND, INDIANA, ASSIGNOR TO AMERICAN STEEL-FOUNDRIES, or CHICAGO, ILLINOIS, A CORPORATION OF *NEWJERSEY.

METHOD OF FORMING A FORGED FULCRUM.

Application an April 26,

To all whom z't may concern! Be it known that I, LOREN L. WHITNEY, acitizen of the United Stateskresiding at Hammond, in the county of La eand State of Indiana, have invented certain new and useful Improvementsin Methods of Forming a Forged Fulcrum, of which the followtion will beapparent from the following deing is a specification.

This invention relates to bandedforged fulcrums. v I

. One of theobjects of myinvention is to improve and simplify the methodof making forged .fulcrums.

Another obj ect is to provide a forged steel fulcrum adapted to meet thevarious requirements for successful commercial operation.

Generally speaking, these and other objects are accomplished byemploying a method of forming a forged steel fulcrum in cluding firstproviding a blank, bending the same into the form of two arms connectedat one end, and then forming a loop or band for embracing a beamcompression member by joining the free ends of said arms.

The invention is illustrated on the accompanying sheets of drawings, inwhich Figure 1 is an edge elevation, and Fig. 2 a plan view of a blank,the ends of which have been beveled;

Fig. 3 is a plan view, and Fig. 4 is a side elevation of the same blankafter one end thereof has been given a certain predetermined twist;

' Fig. 5 is a plan view, and Fig. 6 is a side elevation of the sameblank after the other end has been given a certain predetermined twist;

Fig. 7 is a plan View, and Fig. 8 is a side elevation of the blank afterit has been bent at its middle point to form two arms;

Fig. 9 is a plan view, and Fig. 10 a side elevation of the same blankafter the points of twist of the arms have been squared a predeterminedamount;

Fig. 11 is a plan view, and Fig. 12 a side elevation of the same blankafter the free ends of the arms have been welded together to form a bandfor the reception of" the brake beam compression member;

Fig. 13 is a plan view and Fig. 14 a side elevation of the blank afterthe seat for the tension rod has been formed;

Fig. 15 is a plan View and Fig. 16 is a side elevation of the completedfulcrum after Specification of Letters Patent. Pat t 30, 9

1918. Serial No. 230,987. l

the ferrule has" been set in place and the arms punched for the brakelever pivot, the compression member of the brake beam being shown indotted lines; and

Fig. 17 is a rear view of the banded steel fulcrum.

The various novel features of my inven scription and drawings and willbe particu larly pointed out in the appended claims.

In forming my fulcrum a piece of stock in the form of a steel blank 10is provided, and the ends thereof beveled as at 11 for making a lapjoint to be referred to hereinafter. One end12, of the blank 10 is thengiven a certain predetermined twist, as

shown in Figs. 3 and 4, whereupon the other end 13 of the blank is givena corresponding twist in the opposite directiou' Thenthe blank is bentat its middle point, as shown in Figs. 7 and 8, to form two parallelarms 14 and 15, the twisted ends 12 and 13 of which are parallel withrespect to each other. The arms 14 and 15 are spaced an amount'sufiicient for the reception of a brake lever. The arms 14 and 15 atthe point of twist form one wall 16 of a band for embracing thecompression member of a brake beam. This wall 16 is next given a moredefinite straight line shape, as shown in Figs. 9 and 10, whereupon thefree ends 12 and 13 of the arms 14 and 15, respectively, are bent intothe form of a square loop, and the beveled ends 11 welded together toform a band for the reception of thebrake beam compression member, therear wall 17 of the band being straight and vertical for engaging theweb of the brake beam compression member. A seat 18 is then formed inthe of a brake beam tension member, as shown in Figs. 13 and 14,Whereuponthe arms 14 and 15, as shown in Figs. 15 and 16, are perforatedfor the reception of a brake lever member 22 and the ferrule 19 forcausing the band of a forged steel fulcrum to grip the compressionmember in a manner to pre- 'ventrelative movement between the parts.

By means of this method a forged steel bent portion of the blank for thereception -crum Consisting first in providing a blank,

then bending the same into the form of two arms, and then forming a bandfor embracing a brake beam compression member by joining the freeends ofsaid arms.

2. The method of forming a forged fulerum consistingfirst in providing ablank,

then beveling its ends, then bending the blank to form two arms, andthen forming a band for embracing a brake beam member by joining thebeveled ends of said blank.

3. The method of forming a forged fulcrum consisting first in providinga blank, then beveling the ends-of said blank, then twisting the'ends ofsaid blank in opposite directions, then bending the blank at its middlepoint to form two arms, and then forming a band for embracing a brakebeam member by joining the beveled ends of said arms.

4. The method of forming a forged fulcrum consisting first in providinga blank, then bending thesame intermediate its ends to form two arms,then forming a band for embracing a brake beam compression member byjoining the free ends of said arms, and then forming a seat in the bentend of bending the same intermediate its'ends to form .two arms, joiningthe ends of said arms to form a band for the reception of a brake beammember, and then securing a locking key ferrule to the arms of saidfulcrum.v i 1 7. The method of forming a forged fulerum consisting firstin providing ablank,

beveling the ends thereof, then twisting the ends in oppositedirections, thenbending the blank intermediate its ends, then bendingthe twisted ends and joining the beveled portions thereof to form aband'for the reception of a brake beam member, then forming a seat forthe reception of another brake beam member, and then securing to saidarms a key ferrule member.

Signed at Hammond, Indiana, this 23rd day of April, 1918.

LOB-EN L. WHITNEY.

WVitnesses WILLIAM C. LEIMBAOH, J. M. EBERT.

